/ Dictionary / Index S subgenus: Meaning and Definition of Find definitions for: sub•ge•nus Pronunciation: (sub-jē'nus), [key] — pl. -gen•er•a -ge•nus•es. a category of related species within a genus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subgenus (Thesaurus) subgenre subgingival Related Content Daily Word Quiz: topography Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language